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Is there any way to grant permission to a MySQL Server based on the host and not the username/password. So whitelisted hosts can connect to the MySQL server without using a username or password.
Would doing so improve performance at all?
(the servers are on a LAN that’s not connected to the internet at all, security is of no concern for this setup, only performance)
Yes – that’d be possible to configure. Check out the documentation for the
GRANTcommand.I’m not sure you’d get any notable performance gain from that. I think that the most potentially time consuming element of authentication is the reverse mapping of IP addresses.
All of the doc is here: http://dev.mysql.com/doc/refman/5.0/en/privilege-system.html